// mixin: 混入(函数)
clearDefault()
  appearance: none
  border: none
  outline: none

btn(color, border = false)
  padding: 5px 10px
  border-radius: 5px
  outline: none
  border: none
  cursor: pointer
  if (border == true)
    border: 1px solid color
  else
    background-color: color
    color: #fff

primaryBtn()
  btn(rgb(252, 157, 154))

primaryBorderBtn()
  btn(rgb(252, 157, 154), true)

infoBtn()
  btn(rgb(131, 175, 155))